Home / 25,719.54-38,578.86-13,878.78

Finding the Fourth Proportional to 25,719.54, 38,578.86 and 13,878.78

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Solution

The fourth proportional to 25,719.54, 38,578.86 and 13,878.78 is: 20,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,719.54 : 38,578.86 = 13,878.78 : x
  2. Step 2: Convert to fraction form
    25,719.54/38,578.86 = 13,878.78/x
  3. Step 3: Cross multiply
    25,719.54x = 38,578.86 × 13,878.78
  4. Step 4: Simplify right side
    25,719.54x = 535,427,510.59
  5. Step 5: Solve for x
    x = 535,427,510.59/25,719.54
  6. Step 6: Final answer
    x = 20,817.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.